Malik-ul-Mulk

The root. Malik-ul-Mulk joins two words from the same root, m-l-k, meaning to possess or hold power over something completely. Malik is a king or owner, one who holds a thing outright rather than administering it on another's behalf, and mulk is dominion or sovereignty itself, the possession named as an abstract whole. Putting the two together, "Owner of Sovereignty," doubles the root deliberately, the same way rabb al-'ālamīn doubles emphasis by naming both the one who possesses and the possession in the same phrase.

What it means here. Malik-ul-Mulk is read as the one who owns sovereignty itself, not merely a share of it or a kingdom within it — every throne, every office, every position of authority held by anyone else is understood as delegated from this ownership, temporary and revocable, rather than as sovereignty possessed independently. It differs from Al-Malik, "the King," read alone: that name states the kingship, while this fuller title states the ownership of kingship as a category, the source from which every other authority is loaned rather than owned.

Where it is met. Malik-ul-Mulk appears once in the Quran, in Surah Aal-E-Imran 3:26, opening a supplication the Prophet ﷺ was taught to say: "Say, 'O Allah, Owner of Sovereignty, You give sovereignty to whom You will and You take sovereignty away from whom You will. You honor whom You will and You humble whom You will. In Your hand is [all] good.'" The verse states the name and then immediately demonstrates it, rising and falling power named as something given and withdrawn entirely at His discretion.